公开(公告)号：US11448885B2

公开(公告)日：2022-09-20

申请号：US17241921

申请日：2021-04-27

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Yusufu Njoni Bamaxam Sulai ,  Babak Amirsolaimani ,  Weichuan Gao

IPC: G02B27/01 ,  G02B3/08 ,  G02B5/02 ,  H04N9/31 ,  G02B5/18 ,  G02B5/30 ,  G02B27/10 ,  G02B27/28 ,  G02F1/1334 ,  G02F1/137

Abstract: An optical assembly includes a reflector and a volume Bragg grating (VBG). The VBG is positioned for: (i) transmitting light having a first polarization and incident upon the VBG at an incident angle that is within a first angular range, (ii) reflecting light having the first polarization and incident upon the VBG at an incident angle that is within a second angular range distinct from the first angular range, and (iii) transmitting light having a second polarization different from the first polarization. The optical assembly is configured to receive first light, having the first polarization, and reflect the first light at the reflector and at the VBG before the first light is output from the optical assembly. The optical assembly is configured to receive second light, having the second polarization, and output the second light from the optical assembly without undergoing reflection at either the reflector or the VBG.

公开(公告)号：US20250035928A1

公开(公告)日：2025-01-30

申请号：US18677206

申请日：2024-05-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Wanli Chi ,  Marvin Dion Alim ,  Alexander Sohn ,  Jacques Gollier

IPC: G02B27/01 ,  G02B5/30

Abstract: A system comprising (1) an eyewear device dimensioned to be worn by a user and (2) a compact beam expander incorporated in the eyewear device, the compact beam expander comprising (A) a first light-spreading element configured to diffract light received from a light source, (B) a second light-spreading element configured to further diffract the light, and (C) a pixel element that is positioned proximate to the second light-spreading element and configured to direct the light toward a lens that focuses the light for an eye of the user. Various other apparatuses, systems, and methods are also disclosed.

公开(公告)号：US12204107B2

公开(公告)日：2025-01-21

申请号：US17553635

申请日：2021-12-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Jacques Gollier ,  Liangyu Qiu ,  Xingzhou Tu ,  Ying Geng

IPC: G02B27/01 ,  G02B26/08 ,  G02B27/09

Abstract: An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupling grating supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and an amplitude and/or phase mask for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the mask due to Talbot effect. A beam redirecting element such as a tiltable reflector and/or a steering surface may be provided to shift the lateral location of the illuminating light spots.

公开(公告)号：US12130450B1

公开(公告)日：2024-10-29

申请号：US17163150

申请日：2021-01-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yang Zhao ,  Ying Geng ,  Jacques Gollier ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02B3/08 ,  G02B27/42

CPC classification number: G02B3/08 ,  G02B27/4211

Abstract: An optical assembly includes a Fresnel lens and a diffractive optical element. The Fresnel lens includes a high-refractive-index material having a refractive index greater than 1.9. The diffractive optical element is optically coupled with the Fresnel lens to compensate for chromatic aberration caused by the Fresnel lens. A method for imaging light with the optical assembly is also disclosed.

公开(公告)号：US12124070B2

公开(公告)日：2024-10-22

申请号：US18128497

申请日：2023-03-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Jian Xu ,  Xingzhou Tu ,  Ying Geng ,  Jacques Gollier

IPC: F21V8/00 ,  G02B27/01 ,  G02F1/1335 ,  G03F7/00 ,  G03H1/04

CPC classification number: G02B6/005 ,  G02B6/0066 ,  G02B27/0172 ,  G02F1/133514 ,  G02F1/133528 ,  G03F7/70191 ,  G03F7/70408 ,  G03H1/0402 ,  G02B2027/0112 ,  G02F2201/52 ,  G03H2223/13 ,  G03H2260/12

Abstract: According to examples, a phase plate may include a transparent substrate and a photopolymer layer attached to the transparent substrate. The photopolymer layer may adjust a backlight via a phase adjustment and focusing. The phase plate may focus a plurality of red, green, and blue components of the backlight onto respective red, green, and blue subpixels of a thin-film-transistor (TFT) layer deposited thereon. A distance between the photopolymer layer of the phase plate and the plurality of red, green, and blue subpixels of the thin-film-transistor (TFT) layer may be in a range from about 200 μm to about 500 μm. In some examples, the phase plate may be part of a liquid crystal display (LCD) apparatus along with a red, green, blue (RGB) laser to provide backlight; a grating light guide to transmit the backlight; and a liquid crystal display (LCD) layer on the thin-film-transistor (TFT) layer.

公开(公告)号：US11852836B2

公开(公告)日：2023-12-26

申请号：US17374888

申请日：2021-07-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Jacques Gollier ,  Fenglin Peng ,  Ying Geng ,  Anqi Ji

IPC: G02B27/01 ,  G02B26/08 ,  G02B27/00 ,  G02B27/28

CPC classification number: G02B27/0179 ,  G02B26/0833 ,  G02B27/0093 ,  G02B27/0172 ,  G02B27/286 ,  G02B2027/0174 ,  G02B2027/0187

Abstract: A directional illuminator includes a light source, a pupil-replicating lightguide, and a tiltable reflector coupling the light source to the pupil-replicating lightguide. The exit beam angle of the light outputted by the pupil-replicating lightguide follows the in-coupling angle, and accordingly depends on the tilting angle of the tiltable reflector. The directional illuminator with steered light beam may be used to illuminate a display panel. Steering the illuminating light by the tiltable reflector enables one to steer the exit pupil of the display device to match the user's eye location(s).

公开(公告)号：US11852814B2

公开(公告)日：2023-12-26

申请号：US16810471

申请日：2020-03-05

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yusufu Njoni Bamaxam Sulai ,  Gang Li ,  Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Babak Amirsolaimani ,  Weichuan Gao

IPC: G02B3/08 ,  G02B27/01 ,  G02B5/02 ,  H04N9/31 ,  G02B5/18 ,  G02B5/30 ,  G02B27/10 ,  G02B27/28 ,  G02F1/1334 ,  G02F1/137

CPC classification number: G02B27/0172 ,  G02B3/08 ,  G02B5/0289 ,  G02B5/1819 ,  G02B5/3025 ,  G02B27/0176 ,  G02B27/10 ,  G02B27/106 ,  G02B27/283 ,  G02F1/137 ,  G02F1/1334 ,  H04N9/3152 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02F1/13345

Abstract: A display device includes an optical diffuser configured to, in response to receiving image light, output diffused image light having a same polarization as the image light. The optical diffuser is also configured to transmit ambient light. The display device also includes an optical assembly that includes a substrate, a reflector coupled to the substrate, and a beam splitter coupled to the substrate. The optical assembly is configured to transmit the diffused image light at a first optical power by reflecting the diffused image light at the reflector and at the beam splitter and to transmit the transmitted ambient light at a second optical power that is less than the first optical power without reflection at the reflector or the beam splitter. A method for transmitting light through the display device is also disclosed.

公开(公告)号：US11726328B2

公开(公告)日：2023-08-15

申请号：US17112342

申请日：2020-12-04

Applicant: Meta Platforms Technologies, LLC

Inventor： Marina Zannoli ,  Jacques Gollier

IPC: G02B27/01 ,  G02B3/14

CPC classification number: G02B27/0172 ,  G02B3/14 ,  G02B2027/011

Abstract: The disclosure describes artificial reality (AR) systems and techniques that enable a change in focus of virtual image content without substantially changing magnification of real-world content. For example, an AR system includes a virtual image content output device, a first tunable lens on a real-world side of the virtual image content output device, a second tunable lens on an eye side of the virtual image content output device, and at least one compensating lens. The at least one compensating lens is configured to substantially eliminate magnification changes of real-world light between a real-world end of the optical system and an eye-side end of the optical system as a focal power of at least one of the first tunable lens or the second tunable lens changes.

公开(公告)号：US20230251486A1

公开(公告)日：2023-08-10

申请号：US17667504

申请日：2022-02-08

Applicant: Meta Platforms Technologies, LLC

Inventor： Sihui He ,  Wanli Chi ,  Ying Geng ,  Jacques Gollier

IPC: G02B27/01 ,  G02B27/00 ,  G06F3/01 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B27/0093 ,  G06F3/013 ,  G02B6/0016 ,  G02B2027/0138 ,  G06T19/006

Abstract: A see-through illuminator for a reflective display panel provides a better image contrast when the illuminator is configured to direct a leakage light beam exiting the lightguide from a side opposing the display panel to propagate non-parallel to an image light formed by reflection of an illuminating light beam from the display panel. An objective lens may concentrate the image and leakage light beams at different locations, enabling a user's eye placed at a location of the image light beam to see the projected image without interference from the leakage light beam.

公开(公告)号：US11698539B2

公开(公告)日：2023-07-11

申请号：US16858331

申请日：2020-04-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Jacques Gollier ,  Weichuan Gao ,  Babak Amirsolaimani

IPC: G02B27/01 ,  G02B27/28 ,  F21V8/00 ,  H04N9/31 ,  G02B17/08

CPC classification number: G02B27/283 ,  G02B6/005 ,  G02B6/0058 ,  G02B6/0061 ,  G02B17/086 ,  G02B27/0172 ,  G02B27/0179 ,  G02B27/286 ,  H04N9/3152 ,  G02B2027/0118 ,  G02B2027/0138 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A display device includes a light source, a spatial light modulator (SLM), and an optical assembly that includes a first reflective surface and a second reflective surface that is opposite to the first reflective surface. The light source is configured to provide illumination light. The optical assembly is configured to receive the illumination light. At least a first portion of the illumination light received by the optical assembly is transmitted through the first reflective surface toward the second reflective surface, is reflected by the second reflective surface toward the first reflective surface, is reflected by the first reflective surface toward the second reflective surface, and is transmitted through the second reflective surface. The SLM is configured to receive and modulate the portion of the illumination light transmitted through the optical assembly, and to output the modulated light. A method performed by the display device is also disclosed.